Title of article :
The Temperature and Mass Effects on Dust Grain Electrical Potential in Dusty Plasma
Author/Authors :
Taherimoghadam, Masoud Department of Physics - Mashhad Branch - Islamic Azad University, Mashhad , Motie, Iman Department of Physics - Mashhad Branch - Islamic Azad University, Mashhad , Bakhshayesh, Ali Department of Physics - Mashhad Branch - Islamic Azad University, Mashhad , Mirzaye, Taghi Department of Physics - Mashhad Branch - Islamic Azad University, Mashhad
Abstract :
By orbit-limited motion (OLM) theory and the kinetic model, currents
carried by electrons and ions on the dust grain are obtained and the eects of tem-
perature and drift velocity of ions on the dust grain electrical potential are considered.
It is shown that the dust grain electrical potential and thus the dust grain charge are
aected by density of ions (electrons) and dust grain. Moreover, it is found that as the
ratio of temperature electron-to-ion is raised, the plasma with heavier ions experiences
the larger electric potential of the dust grain. Furthermore, it is indicated that the dust
grain electrical potential for the potassium plasma is signicantly higher than the oxy-
gen plasma. Finally, it is shown that by decreasing the dust grain electrical potential
and the electron temperature, the drift velocity of ions is increased.
Keywords :
electron temperature , drifting ions , charging dust grains , orbit motion lim- ited theory , dusty plasma
Journal title :
Iranian Journal of Astronomy and Astrophysics (IJAA)
